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MRI of ankle with mDIXON TSE on Ingenia 3.0T

Case Study
Lefebvre, Guillaume, M.D. CHRU Lille • France

Patient history

A 30-year-old patient was referred for an MRI examination at Lille University Hospital to explore talalgia. The medical history was a clinical presumption of chronic inflammatory disease. mDIXON TSE was used for examining the painful ankle.

MR examination

The patient was examined on Ingenia 3.0T using the dS FootAnkle coil.

 

Post-contrast T1W mDIXON TSE imaging was done to visualize the whole foot and ankle.

TR 530 ms, TE 15 ms, NSA 1, slices 2.5/0.3 mm, voxels 0.42 x 0.53 mm (acq), 0.40 x 0.40 mm (rec).

Images

Click on an image to enlarge.
 T2W mDIXON TSE in phase T2W mDIXON TSE water only
T2W mDIXON TSE in phase
T2W mDIXON TSE water only

 

 

Homogeneous fat suppression is seen on the post-contrast T1W mDIXON TSE images, including the peripheral and bearing areas.  

Both image series – with and without fat suppression – are obtained from the same acquisition.

In-phase images provide visualization of anatomical abnormalities: small calcaneal enthesophyte and fiber disruption of the Achilles' tendon, which may often be overlooked.

Water images allow to see edematous changes of the tendon and surrounding soft tissue adjacent to the tear. No bone edema is found.

Diagnosis

Diagnosis is focal partial tear of distal Achilles tendon.

Clinical impact

With mDIXON TSE sequences, images with and without fat suppression can be obtained simultaneously without time penalty. Fat suppression is homogeneous over the entire field of view, even when examining a peripheral joint at 3.0T. The bearing area, as imaged in this case, can be a usual source of artifacts and diagnostic difficulty.

 

mDIXON TSE sequences allow simultaneous finding and characterization. The distinction of the relevant structures (cortical and spongious bone, tendon, fat, skin) is helped by the direct match between the different contrasts obtained from the same acquisition.

Related reading

 

 

 

Results from case studies are not predictive of results in other cases. Results in other cases may vary.



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Case Study
Ingenia 3.0T
Achilles tendon, Ankle, dS FootAnkle coil, mDIXON, mDIXON TSE, Musculoskeletal
 

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